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From: Christoph Hellwig <hch@infradead.org>
To: murphyt7@tcd.ie
Cc: leo.duran@amd.com, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Changing the AMD IOMMU API path to work in an atomic context which is necessary for any custom drivers using the IOMMU API while holding a spinlock.
Date: Fri, 24 Aug 2018 07:53:28 -0700	[thread overview]
Message-ID: <20180824145328.GA7996@infradead.org> (raw)
In-Reply-To: <1535120929-5693-1-git-send-email-murphyt7@tcd.ie>

On Fri, Aug 24, 2018 at 02:28:49PM +0000, murphyt7@tcd.ie wrote:
> From: Tom Murphy <murphyt7@tcd.ie>
> 
> ---
> 
> This patch allows the IOMMU API path in the AMD driver to be called from an atomic context.
> This is useful for anyone building a driver which needs to call the IOMMU API while holding a spinlock.

I don't think that is a good idea.  Please point to the code in the
driver and we can't probably find a better solution.

  reply	other threads:[~2018-08-24 14:53 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-24 14:28 [PATCH] Changing the AMD IOMMU API path to work in an atomic context which is necessary for any custom drivers using the IOMMU API while holding a spinlock murphyt7
2018-08-24 14:53 ` Christoph Hellwig [this message]
2018-08-24 15:24   ` Robin Murphy
2018-08-27  6:58     ` Christoph Hellwig
     [not found]     ` <CALQxJuuWqiygrGMVjZ0j-AxBZOskoNHfdYoHEwW4Zgigqjf7kg@mail.gmail.com>
     [not found]       ` <CALQxJutCDrg5A6Mhqq9Tkyd3siGrdY03LdmfEtV9v5vjYO+ZZQ@mail.gmail.com>
2018-08-27  7:07         ` Christoph Hellwig
2018-09-25  9:09 ` Joerg Roedel

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